Tiangui Liu
Hunan University
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Publication
Featured researches published by Tiangui Liu.
Transactions of Nonferrous Metals Society of China | 2009
Chuan-sheng Chen; Tiangui Liu; Xiao-hua Chen; Liang-wu Lin; Qi-cheng Liu; Qing Xia; Zhenwu Ning
Abstract In order to attain new functional nanomaterials with good magnetic property, multi-walled carbon nanotubes/hematite (MWNTs/α-Fe2O3) composites were synthesized using the co-deposition method. MWNTs/α-Fe2O3 composites were characterized by X-ray diffractometry (XRD), scanning electron microscopy (SEM), transmission electron microscopy(TEM), Raman spectroscopy and vibrating sample magnetometry (VSM). The experimental results show that the structure and magnetic properties of the MWNTs/α-Fe2O3 composites are related to the heat treatment temperature. MWNTs are modified by α-Fe2O3 nano-particles and α-Fe2O3 nanorods with a diameter of 10−50 nm after being treated at 450 °C. When the heat treatment temperature exceeds 600 °C, MWNTs are only modified by Fe3O4 particles. Furthermore, the MWNTs composites treated at 450 °C and 600 °C have good magnetic behaviour.
Physica Scripta | 2015
Chuansheng Chen; Xiaodi Xie; Shiyi Cao; Tiangui Liu; Yuen Hong Tsang; Yi Xiao; Qicheng Liu; X F Yang; Li Gong
In this study, the enhancement of photocatalytic activity of a graphene oxide/ZnO (GO/ZnO) nanohybrid was achieved via introducing Mg as a co-dopant element by the co-precipitation method. The Mg-doped ZnO nanoparticles were adsorbed on GO sheets. Compared with the catalyses with GO/ZnO nanohybrids, GO/Zn1−xMgxO nanohybrids exhibited better photocatalytic activity, in which the decomposition rate of methyl orange (MO) reached 100% within 60 min. The enhancement is attributed to Mg-doping and efficient charge transfer of the photogenerated electrons in the conduction band of ZnO to graphene.
Materials Science-poland | 2015
Chuansheng Chen; Xiaodi Xie; Shiyi Cao; Tiangui Liu; Liangwu Lin; Xiaohua Chen; Qicheng Liu; J. C. Kuang; Yi Xiao
Abstract Multi-walled carbon nanotubes/Mg-doped ZnO (MWNTs/Zn1-xMgxO) nanohybrids were prepared by co-precipitation method, and their photocatalytic activity for methyl orange (MO) was studied. Experimental results showed that Mg-doped ZnO nanoparticles were successfully deposited on the surface of MWNTs under annealing at 450 °C and 550 °C. The resultant MWNTs/Zn0.9Mg0.1O nanohybrids had better photocatalytic activity for degradation of methyl orange than pure ZnO: the rates of MO photodegradation were 100 % and 30 % for 1 h, respectively. The enhancement in the photocatalytic activity was attributed to the excellent electronic properties of MWNTs and Mg-doping.
Advanced Materials Research | 2012
Tiangui Liu; Chuansheng Chen; Xiaodi Xie; C.Y. Qiu
In order to improve their optical property, multi-walled carbon nanotubes (MWNTs) were decorated with europium doped yttria oxide (Y2O3:Eu3+) nanoparticles by co-deposition method, and the products were examined by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM) and luminescence spectroscopy. Experimental results illuminate that MWNTs can be decorated by the Y2O3:Eu3+ nanoparticles at annealed temperature of 600 and 750°C, respectively. The optical property of MWNTs/Y2O3:Eu3+ nanohybrids shows the most excellent when the MWNTs concentratin is 0.5 wt.% and the molar ratios of Eu to Y is 5:95.
Journal of Nanoparticle Research | 2013
C. S. Chen; Tiangui Liu; Liangwu Lin; Xiaodi Xie; X. H. Chen; Qicheng Liu; B. Liang; Weiwei Yu; C. Y. Qiu
Solar Energy Materials and Solar Cells | 2017
Chuansheng Chen; Weiwei Yu; Tiangui Liu; Shiyi Cao; Yuenhong Tsang
Applied Surface Science | 2016
Shiyi Cao; Tiangui Liu; Yuenhong Tsang; Chuansheng Chen
Catalysis Communications | 2014
Shiyi Cao; Chuansheng Chen; Tiangui Liu; Bin Zeng; Xutao Ning; Xiaohua Chen; Xiaodi Xie; Weiwei Chen
Journal of Nanoparticle Research | 2012
Chuan Sheng Chen; Xin-yan Xie; Tiangui Liu; Liangwu Lin; J. C. Kuang; Xiaoxia Xie; Li Lu; Siming Cao
Journal of Solid State Chemistry | 2016
Weiwei Yu; Tiangui Liu; Shiyi Cao; Chen Wang; Chuansheng Chen